Normally a political party’s wage bill rises in the run-up to a general election as new staff are taken-on to gear up for battle. It then falls immediately following the contest, with parties’ reverting to their core staff team, until the election drum-beat sounds again later in the new electoral cycle.

Or, at least that’s how things used to be. Since 2010, Labour has taken a very different path.

After the general election, rather than the numbers in the staff team falling, they went up. In 2010, according to the Labour party accounts it employed an average of 247 full time equivalent employees (assuming part-time staff are 0.5 of a full time equivalent or fte). One year later, the number had risen to 288 fte with the party wage bill rising from £12.2m in 2010 to £13.1m in 2011.

Partially this was a result of moving from government to opposition, with large numbers of advisers moving from the civil service payroll onto the Labour party’s books. But even then, it was quite striking for numbers and costs to rise so steeply.

By way of comparison, in 2010, according to the Conservative party accounts, the average number of staff employed was 221 at a cost of £11.7m.

This means in 2011, at the point in the electoral cycle when costs should have been at their lowest, Labour was employing 67 more staff than the Tories had had to fight the general election and spending £1.4m more on its wage bill.